When Disney sold those bonds, it was their fiduciary responsibility to warn of possible consequences that would negatively affect the bond holders. This tax status was NOT guaranteed therefore they should have warned of this possibility.
Disney didn't sell the bonds. Reedy Creek Improvement District did and is responsible for servicing them. If Florida does away with Reedy Creek then under current law they're responsible for them. DeSantis will have to have the legislature change that. And it appears that is his intent.